@Article{VoluZiDySaJaVa:2023:NeTwMe,
               author = "Volu, Ren{\^e} Martins and Zilnyk, Kahl and Dyer, Silvelene 
                         Alessandra Silva and Santos, Claudio Luis dos and Jakutis Neto, 
                         Jonas and Vasconcelos, Get{\'u}lio de",
          affiliation = "{Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and 
                         {Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         de Estudos Avan{\c{c}}ados (IEAv)} and {Instituto 
                         Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and {Instituto de 
                         Estudos Avan{\c{c}}ados (IEAv)}",
                title = "A New Two-Step Method for Laser Cladding of Silicon Carbide in 
                         Wc-Co Substrates",
              journal = "Materials Research",
                 year = "2023",
               volume = "26",
                pages = "26",
             keywords = "Laser cladding, cutting tools, tungsten carbide, silicon 
                         carbide.",
             abstract = "WC-Co cutting tools are widely used by the metalworking industry. 
                         In order to improve the properties of these tools, research on the 
                         application of wear-resistant coatings, such as polycrystalline 
                         diamond, are of great importance to several applications. It is 
                         known that the occurrence of high-stress levels between the 
                         coating and the substrate can lead to adhesion failures. One 
                         strategy to minimize these failures is applying an intermediate 
                         layer of SiC. In this work, the deposition of a SiC layer was 
                         carried out by a novel two-step laser cladding approach. Instead 
                         of cladding directly the presynthesized SiC on the substrates, a 
                         200 µm silicon powder layer was pre-deposited on the WC-Co 
                         substrates and then irradiated with a 30 W CO2 laser. To improve 
                         metallurgical bonding between the tungsten and the Si layer, all 
                         substrates were chemically attacked. This attack allows cobalt 
                         removal from the surface and increases surface roughness, 
                         improving the laser cladding process. After the SiC laser 
                         cladding, samples were coated with a 200 µm graphite powder layer 
                         and irradiated again by a CO2 laser. The samples were 
                         characterized by SEM, EDS, and XRD analysis. The results showed 
                         that in the first step, an irradiation energy of about 0.27 J was 
                         enough to fuse the silicon powder to the substrate and in the 
                         second step, 0.13 J was enough to promote the reaction between 
                         silicon, carbon and the WC substrate, resulting in the in-situ 
                         synthesis of SiC. Finally, a new method was proposed for the 
                         deposition of SiC on WC-Co based substrates and the observed 
                         results allowed the proposal of an empirical equation to describe 
                         the chemical reactions of the process.",
                  doi = "10.1590/1980-5373-mr-2022-0195",
                  url = "http://dx.doi.org/10.1590/1980-5373-mr-2022-0195",
                 issn = "1516-1439",
                label = "lattes: 5184425009298603 3 VoluZiDySaJaVa:2023:NeTwMe",
             language = "pt",
           targetfile = "download.pdf",
        urlaccessdate = "20 maio 2024"
}